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Michael Rockhold michaelrockhold

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  • Rockhold Consulting
  • Seattle, WA
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@michaelrockhold
michaelrockhold / string-permuter.swift
Created August 23, 2020 00:13
//
// main.swift
// string-permuter
//
// Created by Michael Rockhold on 8/22/20.
// Copyright © 2020 Michael Rockhold. All rights reserved.
//
import Foundation
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michaelrockhold / gist:1bf15afb752543e59aa422ca1092abd1
Created November 28, 2019 16:47
import Foundation
func waitAroundThenReturn(continuation: @escaping ()->Void) {
DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
continuation()
}
}
print("Hello, World!")
let curr = CFRunLoopGetCurrent()
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michaelrockhold / Heapsort.swift
Last active October 5, 2019 04:27
// heapsort.swift
//
// Created by Michael Rockhold on 10/4/19.
// Copyright © 2019 Michael Rockhold. All rights reserved.
//
import Foundation
extension MutableCollection where Self.Index == Int {
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michaelrockhold / MyLinkedList.swift
Last active September 25, 2019 19:27
//
// linkedlist.swift
// CommandLinePlayground
//
// Created by Michael Rockhold on 9/24/19.
// Copyright © 2019 Michael Rockhold. All rights reserved.
//
import Foundation
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michaelrockhold / Marsaglia.swift
Last active February 18, 2019 00:23
Swift code to use Marsaglia's method to generate a stream of standard normal random variables
//
// Marsaglia.swift
//
// Created by Michael Rockhold on 2/16/19.
// Copyright © 2019 Michael Rockhold. All rights reserved.
//
import Foundation
struct Marsaglia {
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michaelrockhold / CSVReader.swift
Created February 15, 2019 18:03
Very simple CSV reader in Swift; probably not suitable for very large files
//
// CSVReader.swift
//
// Created by Michael Rockhold on 2/15/19.
// Copyright © 2019 Michael Rockhold. All rights reserved.
//
import Foundation
struct CSVReader: Sequence {
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michaelrockhold / brooksedgecases.md
Created May 12, 2018 23:58

It is pretty funny to read an essay about autonomous vehicles from Rodney Brooks, the subject of the documentary, 'Fast, Cheap, and Out of Control’. Like the author, I too in a previous life encountered many of the same automotive navigation dilemmas on the streets of Cambridge, Massachusetts. In fact, I was back there just a few months ago for a family gathering, and the re-discovery of the massive pain it is to operate a motor vehicle in the Boston/Cambridge/Somerville area neatly balanced out the years of nostalgia I still feel for my erstwhile home.

As Brooks describes, every day of driving a car in Cambridge offers the operator genuine dilemmas, which while seldom (never, maybe) rising to the level of the trolley problem, seem to me genuinely to require the full cognitive capacity of a typical human for their resolution. The author asks how we are likely to solve them, offering perhaps changes in the laws, new technologies, or changes in user

@michaelrockhold
michaelrockhold / pid.swift
Last active April 28, 2018 19:19
// Based on pseudocode at https://en.wikipedia.org/wiki/PID_controller#Pseudocode
import Foundation
protocol PIDControllee {
func measured_value() -> Float;
func output(_ v:Float);
}